linux-kernel - Re: [PATCH] usb: core: Null deref in kernel with USB webcams.

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Date:   Thu, 12 Nov 2020 18:57:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     John Boero <boeroboy@...il.com>
Cc:     Felipe Balbi <balbi@...nel.org>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: core: Null deref in kernel with USB webcams.

On Thu, Nov 12, 2020 at 05:13:30PM +0000, John Boero wrote:
> Yes the patch is backwards sorry.  Testing alt proposal from
> stern@...land.harvard.edu.  It may be a buggy driver
> but it would be nice if a buggy driver couldn't bring down
> the entire usb core. lsusb hangs until reboot or reset of usb.

buggy kernel drivers can do anything, including deleting the contents of
your disk.  We don't protect the kernel from itself, sorry :)

good luck!

greg k-h